"We're expanding the universe with a declassified tale of government conspiracy and heroic cover-ups told through third-person tactical gameplay."

He continued: "The team has been working hard to leverage core XCOM elements like tactical decision-making and permanent death of squad mates in a purposeful way that makes this a unique tactical shooter.

"To that end, The Bureau will challenge players unlike any other third-person tactical shooter."

Developed by 2K Marin, the team behind 2010's BioShock 2, The Bureau: XCOM Declassified will be available on Xbox 360, PS3 and PC from August 23 in Europe.